Struct koto_runtime::BorrowMut

pub struct BorrowMut<'a, T>(/* private fields */)
where
    T: ?Sized;

A mutably borrowed reference to a value borrowed from a KCell

Implementations

impl<'a, T> BorrowMut<'a, T>

where T: ?Sized,

pub fn filter_map<U, F>( borrowed: BorrowMut<'a, T>, f: F, ) -> Result<BorrowMut<'a, U>, BorrowMut<'a, T>>

where F: FnOnce(&mut T) -> Option<&mut U>, U: ?Sized,

Makes a new BorrowMut for an optional component of the borrowed data. If the closure returns None then the original borrow is returned as the error.

Trait Implementations

impl<'a, T> Deref for BorrowMut<'a, T>

where T: ?Sized,

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &T

Dereferences the value.

impl<'a, T> DerefMut for BorrowMut<'a, T>

where T: ?Sized,

fn deref_mut(&mut self) -> &mut T

Mutably dereferences the value.

impl<T> Display for BorrowMut<'_, T>

where T: Display + ?Sized,

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.